I've just upgraded to the latext version of CMSimple with built in TinyMCE4.
I have a dark coloured background on the page and white text. TinyMCE has a white background. While my old stylesheet had a background style specifically for TinyMCE this doesn't work any more and I am unable to find a style either within the TinyMCE4 plugin or elsewhere that will accept a 'background: transparent' style. A local style 'background: #888;' works perfectly but I'd prefer to have the web page background.
Where can I find a style setting that makes TinyMCE background 'transparent'?
Thanks,
Kurt

Thanks manu,
Unfortunately the style settings referred to (in German) don't work.
I've been through all my style settings that refer to 'body/#body' styles and 'background:' but the only setting that has any effect is

However, changing the #888 to 'transparent' disables the style making the background go back to white.
Ofcourse, I could just set the .mce-content-body to the same as the page background, but I'd prefer to have a universal style setting that works on any background.
regards
kurt

Usually, the editor runs in an IFrame. Therefore setting the background to transparent won't let the the surrounding page shine through. And frankly, you don't want to fiddle with TinyMCE styles, anyway.

The simplest solution should be to add the following to your template's stylesheet:

There are no 'background...' styles with #fff or white in my stylesheet.css.
Using the Firefox diagnostic tool I've ploughed through the styles of the '<iframe id="text-ifr" ..' content edit block and other code areas.
Yes, there are background settings in the TinyMCE styles but with testing I couldn't find any that would make the edit block transparent. I tested by turning the backgrounds with #fff to another colour but nothing. I perused classes 'mce-edit-area, mce-container, mce-panel, mce-body, body, #body, etc., etc. but nothing that looked obvious.
Incidentally, I do have an id on the <body statement with an associated style as recommended by Gert back in Dec 2010. However that doesn't set a background colour in the edit frame.
I think I'm going to have to post this problem to the TinyMCE developer's forum.

Thanks Christoph.
In looking through the CSS again I found that there was no background set for 'body'. Appears that the default is white. I have now set both 'body' and the body id to the dark colour and it works. Sorry for any frustration caused.
Kurt